Covestro Deutschland Ag

Bayer Intellectual Property Gmbh

Pantea Nazaran

Rolf Gertzmann

Maria Almato Guiteras

Harald Kraus

Jörg Büchner

Dirk Dijkstra

Friedrich-Karl Bruder

Thomas Fäcke

Thomas Rölle

Marc-Stephan Weiser

Dennis Hönel

Sebastian Dörr

Michael Ludewig

Joachim Petzoldt

Matthias Wintermantel

Hiroshi Morita

Ute Flemm

Eva Tejada

Joan Miguel Garcia Martinez

Nakao Makoto

Juan Miguel Garcia Martinez

Daniel Hentschel

Maria Almató Guiteras

Maria Almato

Eva Tejada Rosales

Joan Miquel Garcia Martinez

The present invention relates to hydrophilized polyurethanes having a particularly high content of hydroxy-functional, unsaturated triglycerides, to a process for preparing polyurethane dispersions based thereon, to the use of the dispersions as binders in oxidatively drying coating materials having particularly high chemical resistance, and to articles and substrates coated with these coating materials.

Oxidatively drying polyurethane dispersions with particularly high chemical resistance

The present invention relates to an aqueous polyurethane dispersion obtainable by the reaction of at least: (A) one polyisocyanate with two or more isocyanate groups, (B) one polyester component comprising (B1) a polyesterpolyol with a mean molecular weight of 300 to 900 g/Mol, having structural units derived from terephthalic acid, (C) one ionic group introducing compound with at least one sulphonate and/or carboxylate group and at least one isocyanate reactive group, (D) one diol with a mean molecular weight of 62 to 400 g/Mol, (E) one polyol with a mean molecular weight of 62 to 400 g/Mol, having three or more hydroxyl groups, (F) one amino functional and/or aminohydroxyl functional compound, its use to coat a substrate and a coating obtained by using the dispersion.

Aqueous polyurethane dispersion comprising a terephthalic acid polyester

The invention relates to a cationically hydrophilized polyurethaneurea characterized in that it is synthesized from The invention further relates to an aqueous dispersion comprising the polyurethaneurea and to a coating composition comprising the polyurethaneurea or the corresponding aqueous dispersion. Further subjects of the invention are a method for coating substrates using the coating composition of the invention, and the coated substrate obtainable in such a method.

Polyurethaneureas for wood coatings

The invention is directed to a one-component (1K) coating system comprising an aqueous polyacrylate polymer dispersion and one or more compounds of elements of sub-groups 5 and/or 6 of the periodic table in which the particular element has an oxidation state of at least +4.

Aqueous acrylic coating system and method for improving the appearance of grained wood surfaces

Method for the production of adhesive-coated articles, articles obtainable thereby and their use A method for the production of adhesive-coated articles comprises the steps of: (I) providing a substrate; (II) applying a first polyurethane and/or polyurethane-polyurea polymer onto the substrate, the first polyurethane and/or polyurethane-polyurea polymer being capable of attaining an at least partially crystalline state with a final degree of crystallinity and wherein during and/or after the application the first polyurethane and/or polyurethane-polyurea polymer is present in a non-crystalline state. The method further comprises the steps: (III) applying onto the first polyurethane and/or polyurethane-polyurea polymer of step (II) a composition comprising a mixture of a second polyurethane and/or polyurethane-polyurea polymer and furthermore an acrylate polymer, wherein the application is performed while the degree of crystallinity of the first polyurethane-polyurea polymer is lower than its final degree of crystallinity; and (IV) cooling the article obtained to a temperature below the glass transition temperature of the acrylate polymer.

Method for the production of adhesive-coated articles, articles obtainable thereby and their use

This invention relates to a holographic medium comprising a protective layer and a photopolymer film which is bonded to the protective layer and contains polyurethane matrix polymers, acrylate writing monomers and photoinitiators, wherein the protective layer is impermeable to the constituents of the photopolymer film, is optically clear and is transparent to electromagnetic radiation having a wavelength in the range of from 350 to 800 nm. The invention further provides the use of a holographic medium according to the invention in the production of holograms, and a process for the production of a holographic medium according to the invention.

Holographic medium having a protective layer

The invention relates to an aqueous adhesive composition containing at least one acrylate polymer with a glass transition temperature Tg&#x3e;50&#xb0; C. and at least one amorphous polyurethane or polyurethane-polyurea polymer with a glass transition temperature Tg&#x3c;+10&#xb0; C., the use of the adhesive compositions for the manufacture of heat-activated adhesive layers, and planar formations containing adhesive layers based on the adhesive composition.

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